Patents by Inventor Sharon G. Johnston
Sharon G. Johnston has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7029837Abstract: This invention relates to a silver halide photographic element comprising a support bearing a cyan dye image forming unit comprised of at least one red sensitive silver halide emulsion, a magenta dye image forming unit comprised of at least one green sensitive silver halide emulsion, and a yellow dye image forming unit comprised of at least one blue sensitive silver halide emulsion; wherein the at least one green sensitive silver halide emulsion comprises two absorptance peaks, the first peak being between 515 and 540 nm (short wavelength peak) and the second peak being between 565 and 590 nm, (long wavelength peak) and wherein (a) the ratio of the absorptance peak value of the short wavelength peak to the absorptance peak value of the long wavelength peak is from 0.65 to 1.55; (b) the absorptance minimum between the two absorptance peaks is between 530 and 560 nm; (c) the ratio of the absorptance value at the absorptance minimum to that of the smaller absorptance peak is 0.Type: GrantFiled: December 11, 2003Date of Patent: April 18, 2006Assignee: Eastman Kodak CompanyInventors: David E. Fenton, Lois A. Buitano, Steven G. Link, Sharon G. Johnston, David B. Moorehouse
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Patent number: 6811963Abstract: This invention relates to a silver halide photographic element comprising a support bearing a cyan dye image-forming unit comprised of at least one red-sensitive silver halide emulsion layer having associated therewith at least one cyan dye-forming coupler, a magenta dye image-forming unit comprising at least one green-sensitive silver halide emulsion layer having associated therewith at least one magenta dye-forming coupler, and a yellow dye image-forming unit comprising at least one blue-sensitive silver halide emulsion layer having associated therewith at least one yellow dye-forming coupler, wherein at least one of the dye image forming units contains layers of differing sensitivities, and the layer of highest sensitivity contains a development promoting agent or a specific coupler as described herein, or a combination thereof, and a silver halide emulsion comprising tabular silver halide grains having associated therewith at least two dye layers comprising (a) an inner dye layer adjacent to the silver haType: GrantFiled: January 17, 2003Date of Patent: November 2, 2004Assignee: Eastman Kodak CompanyInventors: Sharon G. Johnston, Stephen P. Singer, Drake M. Michno, James A. Friday, David R. Foster
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Publication number: 20040146815Abstract: This invention relates to a silver halide photographic element comprising a support bearing a cyan dye image-forming unit comprised of at least one red-sensitive silver halide emulsion layer having associated therewith at least one cyan dye-forming coupler, a magenta dye image-forming unit comprising at least one green-sensitive silver halide emulsion layer having associated therewith at least one magenta dye-forming coupler, and a yellow dye image-forming unit comprising at least one blue-sensitive silver halide emulsion layer having associated therewith at least one yellow dye-forming coupler, wherein at least one of the dye image forming units contains layers of differing sensitivities, and the layer of highest sensitivity contains a development promoting agent or a specific coupler as described herein, or a combination thereof, and a silver halide emulsion comprising tabular silver halide grains having associated therewith at least two dye layers comprising (a) an inner dye layer adjacent to the silver haType: ApplicationFiled: January 17, 2003Publication date: July 29, 2004Inventors: Sharon G. Johnston, Stephen P. Singer, Drake M. Michno, James A. Friday, David R. Foster
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Patent number: 6699652Abstract: This invention relates to a silver halide photographic element comprising a support bearing a cyan dye image-forming unit comprised of at least one red-sensitive silver halide emulsion layer having associated therewith at least one cyan dye-forming coupler, a magenta dye image-forming unit comprising at least one green-sensitive silver halide emulsion layer having associated therewith at least one magenta dye-forming coupler, and a yellow dye image-forming unit comprising at least one blue-sensitive silver halide emulsion layer having associated therewith at least one yellow dye-forming coupler, wherein at least one of the dye image forming units contains layers of differing sensitivities, and the layer of highest sensitivity contains a development promoting agent or a specific coupler as described herein, or a combination thereof, and a silver halide emulsion comprising tabular silver halide grains having associated therewith at least two dye layers comprising (a) an inner dye layer adjacent to the silver haType: GrantFiled: January 17, 2003Date of Patent: March 2, 2004Assignee: Eastman Kodak CompanyInventors: Sharon G. Johnston, Stephen P. Singer, Drake M. Michno, James A. Friday, David R. Foster
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Patent number: 6656674Abstract: A photographic element which comprises a support bearing: (i) a first radiation-sensitive silver halide emulsion image-forming layer comprising a high bromide tabular grain emulsion including tabular grains having {111} major faces, exhibiting an average thickness of at least 0.07 &mgr;m and an average aspect ratio of at least 2; and (ii) a second radiation-sensitive silver halide emulsion image-forming layer comprising an ultrathin tabular grain emulsion including tabular grains having {111} major faces, containing greater than 70 mole percent bromide and at least 0.25 mole percent iodide, exhibiting an average thickness of less than 0.07 &mgr;m and an average equivalent circular diameter of at least 0.Type: GrantFiled: December 21, 2001Date of Patent: December 2, 2003Assignee: Eastman Kodak CompanyInventors: Tommie L. Royster, Jr., John E. Keevert, Jr., Sharon G. Johnston, Donald L. Black, David W. Sandford
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Publication number: 20030152877Abstract: A photographic element which comprises a support bearing: (i) a first radiation-sensitive silver halide emulsion image-forming layer comprising a high bromide tabular grain emulsion including tabular grains having {111} major faces, exhibiting an average thickness of at least 0.07 &mgr;m and an average aspect ratio of at least 2; and (ii) a second radiation-sensitive silver halide emulsion image-forming layer comprising an ultrathin tabular grain emulsion including tabular grains having {111} major faces, containing greater than 70 mole percent bromide and at least 0.25 mole percent iodide, exhibiting an average thickness of less than 0.07 &mgr;m and an average equivalent circular diameter of at least 0.Type: ApplicationFiled: December 21, 2001Publication date: August 14, 2003Applicant: Eastman Kodak CompanyInventors: Tommie L. Royster,, John E. Keevert,, Sharon G. Johnston, Donald L. Black, David W. Sandford
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Patent number: 6514683Abstract: This invention comprises a photographic element comprising at least one light-sensitive silver halide emulsion layer containing a fragmentable electron donating compound of the formula: X—Y′ or a compound which contains a moiety of the formula —X—Y′; wherein X is an electron donor moiety, Y′ is a leaving proton H or a leaving group Y, with the proviso that if Y′ is a proton, a base, &bgr;−, is present in the emulsion layer, and wherein: 1) X—Y′ has an oxidation potential between 0 and about 1.4 V; and 2) the oxidized form of X—Y′ undergoes a bond cleavage reaction to give the radical X• and the leaving fragment Y′; and 3) the radical X• has an oxidation potential ≦−0.Type: GrantFiled: January 5, 2001Date of Patent: February 4, 2003Assignee: Eastman Kodak CompanyInventors: Annabel A. Muenter, Steven P. Szatynski, Sharon G. Johnston
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Publication number: 20030008248Abstract: This invention comprises a photographic element comprising at least one light-sensitive silver halide emulsion layer containing a fragmentable electron donating compound of the formula: X—Y′ or a compound which contains a moiety of the formula —X—Y′; whereinType: ApplicationFiled: January 5, 2001Publication date: January 9, 2003Applicant: Eastman Kodak CompanyInventors: Annabel A. Muenter, Steven P. Szatynski, Sharon G. Johnston
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Patent number: 6428947Abstract: This invention comprises multicolor photographic element comprising a support bearing a cyan dye image-forming unit comprising at least one red-sensitive silver halide emulsion layer having associated therewith at least one cyan dye-forming coupler, a magenta dye image-forming unit comprising at least one green-sensitive silver halide emulsion layer having associated therewith at least one magenta dye-forming coupler, a yellow dye image-forming unit comprising at least one blue-sensitive silver halide emulsion layer having associated therewith at least one yellow dye-forming coupler, wherein at least one of said red-sensitive or green-sensitive layers comprises a fragmentable electron donating compound of the formula: X—Y′ or a compound which contains a moiety of the formula —X—Y′; wherein the speed gain deriving from addition of said compound to said layer is less than or equal to 0.Type: GrantFiled: January 5, 2001Date of Patent: August 6, 2002Assignee: Eastman Kodak CompanyInventors: Sharon G. Johnston, Annabel A. Muenter, Steven P. Szatynski, Jerome R. Lenhard
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Patent number: 5612175Abstract: A radiation-sensitive spectrally sensitized tabular grain emulsion is disclosed which exhibits improved speed and contrast. The tabular grains have {111} major faces, contain greater than 70 mole percent bromide and up to 10 mole percent iodide, based on silver, account for greater than 90 percent of total grain projected area, and have an average equivalent circular diameter of at least 3.5 .mu.m. The tabular grains have latent image forming chemical sensitization sites on their surfaces including epitaxially deposited silver halide protrusions of a face centered cubic rock salt crystal lattice structure forming epitaxial junctions with the tabular grains.Type: GrantFiled: January 26, 1996Date of Patent: March 18, 1997Assignee: Eastman Kodak CompanyInventors: Lyn M. Eshelman, Paul J. Madigan, Joseph C. Deaton, David A. Dumont, Michael G. Antoniades, Sharon G. Johnston